🛡️ CVE-2026-16441 — openj9

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

• Attack vector: Network — reachable from anywhere that can route to the service.
• Attack complexity: Low — the attack works reliably, with no preparation.
• Privileges required: None — an unauthenticated stranger can try it.
• User interaction: Required — someone has to click, open or visit something.
• Scope: Changed — a successful attack reaches components beyond the vulnerable one.
• Confidentiality impact: High — total loss, or loss the attacker controls.
• Integrity impact: High — total loss, or loss the attacker controls.
• Availability impact: High — total loss, or loss the attacker controls.

Weakness class

CVE-2026-16441 is classified as CWE-758: Reliance on Undefined, Unspecified, or Implementation-Defined Behavior. The product uses an API function, data structure, or other entity in a way that relies on properties that are not always guaranteed to hold for that entity.

Affected software

CVE-2026-16441 is recorded against 1 package.

• openj9 (from 0.8.0 up to 0.60.0)

Timeline and source

Published on 21 July 2026 and last revised on 18 August 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

github.com
github.com
gitlab.eclipse.org

Other advisories for this package

openj9 has other advisories on record. If you are patching this one, these are worth checking on the same host:

• CVE-2026-16439 (9.1 Critical, published 21 Jul 2026)
• CVE-2026-6918 (7.5 High, published 5 May 2026)
• CVE-2025-4447 (7.8 High, published 9 May 2025)
• CVE-2024-10917 (3.7 Low, published 11 Nov 2024)
• CVE-2024-3933 (5.3 Medium, published 27 May 2024)
• CVE-2023-5676 (4.1 Medium, published 15 Nov 2023)
• CVE-2023-2597 (7.0 High, published 22 May 2023)
• CVE-2022-3676 (6.5 Medium, published 24 Oct 2022)

Same weakness in other software

These advisories are the same class of weakness (CWE-758: Reliance on Undefined, Unspecified, or Implementation-Defined Behavior) in other software:

• CVE-2026-50185 (3.3 Low, published 2 Jul 2026)
• CVE-2024-58350 (2.9 Low, published 10 Jun 2026)
• CVE-2026-40279 (3.7 Low, published 21 Apr 2026)
• CVE-2026-34537 (6.2 Medium, published 31 Mar 2026)
• CVE-2026-34533 (6.2 Medium, published 31 Mar 2026)
• CVE-2026-34549 (6.2 Medium, published 31 Mar 2026)
• CVE-2026-34547 (6.2 Medium, published 31 Mar 2026)
• CVE-2026-4724 (9.1 Critical, published 24 Mar 2026)

Details

Affected Packages

References